58 lines
1.7 KiB
Haskell
58 lines
1.7 KiB
Haskell
{- git hash-object interface
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-
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- Copyright 2011-2014 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Git.HashObject where
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import Common
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import Git
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import Git.Sha
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import Git.Command
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import Git.Types
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import qualified Utility.CoProcess as CoProcess
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import Utility.Tmp
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type HashObjectHandle = CoProcess.CoProcessHandle
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hashObjectStart :: Repo -> IO HashObjectHandle
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hashObjectStart = CoProcess.rawMode <=< gitCoProcessStart True
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[ Param "hash-object"
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, Param "-w"
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, Param "--stdin-paths"
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, Param "--no-filters"
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]
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hashObjectStop :: HashObjectHandle -> IO ()
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hashObjectStop = CoProcess.stop
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{- Injects a file into git, returning the Sha of the object. -}
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hashFile :: HashObjectHandle -> FilePath -> IO Sha
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hashFile h file = CoProcess.query h send receive
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where
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send to = hPutStrLn to =<< absPath file
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receive from = getSha "hash-object" $ hGetLine from
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{- Injects a blob into git. Unfortunately, the current git-hash-object
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- interface does not allow batch hashing without using temp files. -}
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hashBlob :: HashObjectHandle -> String -> IO Sha
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hashBlob h s = withTmpFile "hash" $ \tmp tmph -> do
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hPutStr tmph s
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hClose tmph
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hashFile h tmp
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{- Injects some content into git, returning its Sha.
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-
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- Avoids using a tmp file, but runs a new hash-object command each
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- time called. -}
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hashObject :: ObjectType -> String -> Repo -> IO Sha
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hashObject objtype content = hashObject' objtype (flip hPutStr content)
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hashObject' :: ObjectType -> (Handle -> IO ()) -> Repo -> IO Sha
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hashObject' objtype writer repo = getSha subcmd $
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pipeWriteRead (map Param params) (Just writer) repo
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where
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subcmd = "hash-object"
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params = [subcmd, "-t", show objtype, "-w", "--stdin", "--no-filters"]
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